Improved burning-kiln



Warsaw GREEN, OF ST. LOUIS, MISSOURI.

Letters Patent No. 85,813, dated January 12, 1869.

IMPROVED BURNING-KILN.

Schedule referred to in there Letters Patent and making part of the sama.

To all whom 'it ma/y concern Be it known that I,`.LLMES GREEN, of St, Louis, in the county of St. Louis, and State of Missoun', have inventeda new and improved Kiln for VBurning Fire# Brick, Tiles, and other analogous articles of manufacture; and4 I do hereby declare that the following is a full, clear,and exact description thereof, which will enable those skilled in the art to make and use the same, reference lbeing had to the accompanying drawings, forming part of thisspecification, iu whichlliigure 1 is a central vertical section of' the. kiln through the line w fw, fig. 2.

`Figure 2 is. a horizontal -sectionof the same through the line x a, iig. 1.

Figure 3 'is a vertical sectiongof the same' through the line y y, tig. 2.

Figure 4 is a horizontal section ofthe same through `the line zz, iig. l.

blick, and is provided at its apex with an outletstack,

D, forthe escape ofthe heat and smoke that have passed through the kiln.

The inner dome,'A, is concentric .with the outer doine, audseparated from it by an air-space, N.

Both domes spring from the top of the wallA, and are a continuous part of it, the inner dome being built `of fire-brick.

The base, L, is formed with radial tire-passages, (usually four in number,)which merge together at the ccntre of the kiln, immediately under the central smoke and heat-stack B, also of fire-brick, which extends upward nearly tothe top of the inner dome.

The lire-passages M are enlarged at their central openings, Aand provided with grate-bars, J, thus con- Stituting furnaces in which the fuel is placed.

At each side of each of these furnaces, air-pipes or passages, b, are located, the external openings being in the wall, near the furnace-fronts, and their internal open- `tile-irraterial or iron.

ings, consisting of several smaller passages, a a @are arranged to admit the air to the nre-passages M, `)ust lin rear of the grates, so as to conduce tofthe more perfect combustion of the carbonaceous particles and ame as they pass over the bridge-wall, thus c onstituting a system of draught-passages, which, from their proximity to the furnaces, enable the air to become warmed as it is drawn through, and thus operate more effectively in-promoting combustion.

The heat passes upward through the stack B, which opens downward into the space or recess formed by the junction ofthe fire-passages, as before mentioned.

The space within the wall A' and the inner dome A is filled with the bricks or tiles to be burnt, the same being introduced through regular openings in the wall, which are afterward closed by blocks or doors, E, of

The bricks or tilesbcing burnt are arranged around will permit the passage of the heat downward through the mass.

lRadial dues, I, (usually four in number,) are formed in the base, L, from the stack B outward, where they open into vertical luesK, formed in the wall A', these latter ues opening into the space N between the domes.

The passage of the heat and smoke, as indicated by the arrows in iig. l, is 'up'. through the stack B, and down through the main cavity of the kiln which contains the bricks,'.to the flues I, which latter are bridged with' tiles, H, arranged with spaces between, for the downward passage of the heat and smoke into the ues I, from whence it p a'ssesl into the flues K, and thence into the space N, and finally out through the stack D.

The wall A is strengthened and sustained by circular bauds and vertical bars, in the usual manner.

The doors E are held in place by the passage of the bauds across them, the latter being hinged at the doors, to admit of the removal of the' latter.

I claim as new, aud desire to secure by 'Letters Patent- The described arrangement of the base, L, re-pas-- 

